/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.cassandra.locator;

import org.apache.cassandra.config.DatabaseDescriptor;
import org.apache.cassandra.dht.IPartitioner;
import org.apache.cassandra.distributed.test.log.ClusterMetadataTestHelper;
import org.apache.cassandra.tcm.ClusterMetadataService;

public class WithPartitioner implements AutoCloseable
{
    private ClusterMetadataService toRestore;

    public WithPartitioner(IPartitioner partitioner)
    {
        toRestore = ClusterMetadataService.instance();
        DatabaseDescriptor.setPartitionerUnsafe(partitioner);
        ClusterMetadataService withNewPartitioner = ClusterMetadataTestHelper.instanceForTest();
        ClusterMetadataService.unsetInstance();
        ClusterMetadataService.setInstance(withNewPartitioner);
    }

    @Override
    public void close()
    {
        ClusterMetadataService.unsetInstance();
        ClusterMetadataService.setInstance(toRestore);
    }
}

